Test-Driven Infrastructure With Chef
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PostgreSQL 9.0 High Performance
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Artificial Intelligence: A Modern Approach
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Docker: Up & Running
Karl Matthias & Sean P. Kane
The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall
Peter N. M. Hansteen
Absolute FreeBSD: The Complete Guide to FreeBSD, 2nd Edition
Michael W. Lucas